Preparation:
Crumble yeast add warm milk and a spoon of flour. When the yeast rise, add it to the flour. Add all other ingredients and knead the dough. Mix dough well and put in a warm place to rise. Roll out the dough, spread with filling, roll and place in a greased baking dish. Leave the cake to rise and bake at 190 ° C for about 45 minutes.
Pour the poppy with hot milk and stir over the fire to boil. Add margarine, rum and sugar. When cool, add the egg whites (snow).